And they made the return journey with their family for a retrial of Greek taxi driver Stelios Morfis earlier this month, only to be told the case was being adjourned until July.

Now, the Tadley family are struggling to find the money to fund another journey to Greece to be able to attend court.

Mrs Sebbage said: “We've lost a massive amount of money. Our hearts say one thing and our minds say another. We want our evidence to be heard, but it’s costing us a fortune.

“We are the victim’s family so why is it costing us? Why should Stelios Morfis have his time in court and not us?”

Royals fan Robert died from a single knife wound to the heart during a row with two taxi drivers on the island of Zante in July 2011.

Four of Robert’s friends he was on holiday with also suffered stab wounds.

Morfis was convicted of unintentional manslaughter and attacking four of Robert’s friends and jailed for 11 years in September 2012.

A retrial was ordered following appeals from both sides.

Mr and Mrs Sebbage, their two sons and about 10 others, including Robert’s injured friends and their family, flew out to Greece for the re-trial on Monday, June 9, for the start of the case on Wednesday.

But Morfis’s legal representative was not available and after four days of legal wrangling the case was adjourned until Tuesday, July 1.

Mrs Sebbage said: “We are almost taking our own bets now on what will happen next.”

Robert was a Reading FC season ticket holder and walked on to the Wembley pitch with David Beckham as an England mascot in June 2007.

A group called Out of the Blue was set up to help Robert’s family obtain justice for their son and his friends and about £60,000 was raised.

However, Mrs Sebbage said the cost of flights, accommodation and an interpreter has taken its toll.